Hmmm, I see what you mean about having the brake lights coming on before the brakes 'kick in'. This wouldn't be done on a production car as it be abused by people flashing their brake lights as warnings. People have enough to worry about without people making up hazards for you.
As for warming up, the camshafts are the worst effected by idle. As the valves have to climb quite a steep ramp (on the cam), at idle the wear is actually much worse. You'll knacker your cams quite quickly (although I don't think most people idle enough to cause a problem).
That said, our painter once drove a car into the spray booth at his old work at 5:30, then went home. The next day he came in, and found the spray booth filled with smoke because he'd forgotten to turn it off, and it had been ilding all night. Needless to say the customer never found out.
This was at a main dealer :O
As for warming up, the camshafts are the worst effected by idle. As the valves have to climb quite a steep ramp (on the cam), at idle the wear is actually much worse. You'll knacker your cams quite quickly (although I don't think most people idle enough to cause a problem).
That said, our painter once drove a car into the spray booth at his old work at 5:30, then went home. The next day he came in, and found the spray booth filled with smoke because he'd forgotten to turn it off, and it had been ilding all night. Needless to say the customer never found out.
This was at a main dealer :O